Does anyone have good visual settings and good preformance settings for Quake Champions?

My specs are:

Procesor: Intel Core i5-6400
GFX: GeForce GTX 750 Ti 4GB DDR5
Mouse: Logitech G303
Mousepad: Razer Goliathus Control XL
Headphones: Logitech G430 Gaming Headset
Disk: SSD Kingston Hypherx Savage 240 GB
Monitor: Asus VG248Q3 144hz, 1ms, 3D, 24" and PG Neovo 27" LE-27

Im getting FPS drops especially in the beginning of the match, mid match and after few games I need to restart Quake Champs.

With mid gfx settings I get about 130 fps @ 1920x1080
With all low scale 50% Im getting up to 300 fps and in the same time drop to 50 fps - its getting unplayable.

I close all apps in background
I set QC to high priority
I am changing video resolution down to 800x600 and its the same maybe 10 - 20 fps more but still unplayable.

Is QC so fucked up atm?

Can anyone tell me best settings for QC also best visual settings so enemy model are visible better also I need settings to disable / lower effects. Are there any settings to do so outside of QC?

Due to that problem I will buy a new gfx and Im willing to spend up to 600€ for it. Not sure if its worth since I can play overwatch with all mid settings and im getting 200 fps there. IS QC not, zero optimized yet? Should I wait with new gfx?

Please let me know