[2.0.8] performance issue on external monitor

[GoldenMDK]

playing on a laptop using manjaro linux and i3wm, when using and external monitor my fps drop significantly.

factorio SA fps issue.png (10.06 MiB) Viewed 226 times

here my fps are very low compared to my ups, the game is rendered on an external monitor

factorio SA fps normal.png (2.94 MiB) Viewed 226 times

here my fps are normal, the game is rendered on my laptop monitor

between to two screenshot i only changed the screen on which the game was displayed, i did not close the game nor the save.
the issues is also present on every background save of the main menu.
the issue seem to be factorio specific as other app are displayed without slowdown.
the issue was NOT present prior to 2.0 and space age.

factorio-current.log

(10.62 KiB) Downloaded 9 times

[GoldenMDK]

this post solved my issue
viewtopic.php?f=49&t=116640