mjhjmtu

I've a PC with an Intel Wireless 8260 running Debian Unstable. networking.service slows the startup (with systemd) down with 1 minute and ~5 seconds. I'm running version 4.8.15-2 of the Linux kernel with version 20161130-2 of the iwlwifi firmware. After my system has finally started up, the internet is slow and I've to run sudo iw dev wlan set power_save off to make the speed acceptable, but still not the full speed I get on my cheap Windows laptop. The output of sudo dmesg | grep iwl is:

[ 4.668210] iwlwifi 0000:01:00.0: enabling device (0000 -> 0002)
[ 4.681311] iwlwifi 0000:01:00.0: firmware: failed to load iwlwifi-8000C-24.ucode (-2)
[ 4.681313] iwlwifi 0000:01:00.0: Direct firmware load for iwlwifi-8000C-24.ucode failed with error -2
[ 4.681326] iwlwifi 0000:01:00.0: firmware: failed to load iwlwifi-8000C-23.ucode (-2)
[ 4.681327] iwlwifi 0000:01:00.0: Direct firmware load for iwlwifi-8000C-23.ucode failed with error -2
[ 4.695991] iwlwifi 0000:01:00.0: firmware: direct-loading firmware iwlwifi-8000C-22.ucode
[ 4.696663] iwlwifi 0000:01:00.0: loaded firmware version 22.361476.0 op_mode iwlmvm
[ 4.732100] iwlwifi 0000:01:00.0: Detected Intel(R) Dual Band Wireless AC 8260, REV=0x208
[ 4.734471] iwlwifi 0000:01:00.0: L1 Enabled - LTR Enabled
[ 4.735424] iwlwifi 0000:01:00.0: L1 Enabled - LTR Enabled
[ 4.897671] ieee80211 phy0: Selected rate control algorithm 'iwl-mvm-rs'
[ 66.833134] iwlwifi 0000:01:00.0: L1 Enabled - LTR Enabled
[ 66.833550] iwlwifi 0000:01:00.0: L1 Enabled - LTR Enabled
[ 66.972299] iwlwifi 0000:01:00.0: L1 Enabled - LTR Enabled
[ 66.972727] iwlwifi 0000:01:00.0: L1 Enabled - LTR Enabled

The output of sudo iwconfig wlan0 is:

wlan0 IEEE 802.11 ESSID:"VFNL-DE1BA0" 
 Mode:Managed Frequency:2.447 GHz Access Point: 00:1D:AA:DE:1B:A0 
 Bit Rate=270 Mb/s Tx-Power=22 dBm 
 Retry short limit:7 RTS thr:off Fragment thr:off
 Encryption key:off
 Power Management:off
 Link Quality=51/70 Signal level=-59 dBm 
 Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
 Tx excessive retries:0 Invalid misc:23 Missed beacon:0

How can I make my system startup fast and get the full speed of my internet?

There was a bug report filed against Ubuntu a few years back that said

echo "options iwlwifi 11n_disable=8" | sudo tee -a /etc/modprobe.d/iwlwifi.conf

I am stuck on the same stuff. i have tried swapping wifi manager. tried disable n11 from 1-11 and still its 4-5mbit down and 60mbit up. on windows I always get 100-300 mbit down on the 5ghz band. I have also been trying to swap drivers to older versions and it seems like nothing helps.

Now I am more in the thoughts of swapping the network card. What would be a good substitute to this? should be the same speed of a new card and also have bluetooth.

Elitebook 840 g3 here.