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nano /etc/sysctl.d/00-opti-vt.conf

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kernel.pid_max = 65535
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kernel.panic = 1
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kernel.sysrq = 1
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kernel.core_pattern = core_%e
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kernel.printk = 3 4 1 3
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kernel.numa_balancing = 0
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kernel.sched_autogroup_enabled = 0
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vm.swappiness = 10
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vm.dirty_ratio = 10
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vm.dirty_background_ratio = 5
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vm.panic_on_oom = 1
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vm.overcommit_memory = 1
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vm.min_free_kbytes = 90214
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net.core.default_qdisc = fq
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net.core.netdev_max_backlog = 2000
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net.core.rmem_max = 14745600
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net.core.wmem_max = 14745600
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net.core.rmem_default = 87380
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net.core.wmem_default = 65536
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net.core.somaxconn = 883
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net.core.optmem_max = 65536
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net.ipv4.tcp_fastopen = 3
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net.ipv4.tcp_timestamps = 1
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net.ipv4.tcp_tw_reuse = 1
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net.ipv4.tcp_fin_timeout = 10
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net.ipv4.tcp_slow_start_after_idle = 0
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net.ipv4.tcp_max_tw_buckets = 32768
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net.ipv4.tcp_sack = 1
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net.ipv4.tcp_fack = 0
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net.ipv4.tcp_rmem = 8192 87380 14745600
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net.ipv4.tcp_wmem = 8192 65536 14745600
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net.ipv4.tcp_mtu_probing = 1
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net.ipv4.tcp_congestion_control = bbr
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net.ipv4.tcp_notsent_lowat = 4096
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net.ipv4.tcp_window_scaling = 1
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net.ipv4.tcp_adv_win_scale = 4
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net.ipv4.tcp_moderate_rcvbuf = 1
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net.ipv4.tcp_no_metrics_save = 0
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net.ipv4.tcp_max_syn_backlog = 3533
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net.ipv4.tcp_max_orphans = 65536
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net.ipv4.tcp_synack_retries = 2
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net.ipv4.tcp_syn_retries = 3
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net.ipv4.tcp_abort_on_overflow = 0
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net.ipv4.tcp_stdurg = 0
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net.ipv4.tcp_rfc1337 = 0
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net.ipv4.tcp_syncookies = 1
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net.ipv4.ip_local_port_range = 1024 65535
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net.ipv4.ip_no_pmtu_disc = 0
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net.ipv4.route.gc_timeout = 100
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net.ipv4.neigh.default.gc_stale_time = 120
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net.ipv4.neigh.default.gc_thresh3 = 8192
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net.ipv4.neigh.default.gc_thresh2 = 4096
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net.ipv4.neigh.default.gc_thresh1 = 1024
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net.ipv4.icmp_echo_ignore_broadcasts = 1
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net.ipv4.icmp_ignore_bogus_error_responses = 1
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net.ipv4.conf.all.rp_filter = 1
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net.ipv4.conf.default.rp_filter = 1
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net.ipv4.conf.all.arp_announce = 2
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net.ipv4.conf.default.arp_announce = 2
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net.ipv4.conf.all.arp_ignore = 1
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net.ipv4.conf.default.arp_ignore = 1

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sysctl -p /etc/sysctl.d/00-opti-vt.conf

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reboot