Screen resolution issue

[marlab]

Update: it started showing moOde screen with "dtoverlay=vc4-kms-v3d" enabled in /boot/firmware/config.txt
But... it's pretty slow, I might need upgrade to RPi 4 to actually enjoy it.

Ah, forgot to add:

Code:

Connector 0 (33) HDMI-A-1 (connected)
 Encoder 0 (32) TMDS
   Crtc 3 (95) 1024x600@60.04 49.000 1024/5/13/270/- 600/2/3/17/+ 60 (60.04)
     Plane 3 (84) fb-id: 672 (crtcs: 3) 0,0 1024x600 -> 0,0 1024x600 (XR24 AR24 AB24 XB24 RG16 BG16 AR15 XR15 RG24 BG24 YU16 YV16 YU24 YV24 YU12 YV12 NV12 NV21 NV16 NV61 RGB8 BGR8 XR12 AR12 XB12 AB12 BX12 BA12 RX12 RA12)
       FB 672 1024x600 XR24
     Plane 55 (657) fb-id: 671 (crtcs: 3) 0,0 64x64 -> 981,590 64x64 (XR24 AR24 AB24 XB24 RG16 BG16 AR15 XR15 RG24 BG24 YU16 YV16 YU24 YV24 YU12 YV12 NV12 NV21 NV16 NV61 RGB8 BGR8 XR12 AR12 XB12 AB12 BX12 BA12 RX12 RA12)
       FB 671 64x64 AR24

I've tried to force lower resolution in config.txt (hoping for performance boost), but it keeps defaulting to high res...