Help with DisplayPort / HDMI problem

[pavvel]

HI all I have a problem.

Currently I connect my M2 MBP to my screen with Displayport > USB-C and the picture quality is great, no problems.

I have brought a hub and very good quality HDMI and whether I plug into hub or direct into laptop the HDMI picture is noticeability worse quality. The icons seem grainy, and the text isn't as sharp and colour is different. I have tried playing with colour profiles and messing with the display settings and disabling font smoothing etc.. but it's just not like the DP connection.

Can anyone shed any light on why this might be?

Thanks.

 

[bogdanw]

There might be differences in the resolutions & refresh rates supported. Can you share the links for the two products?

 

[kk123]

Most type-c to HDMI hub/adapters are quite lossy for mac and usually have chrome subsampling.
the proven good ones are vmm7100-based (still not 100% work):

https://forums.macrumors.com/threads/dp-usb-c-thunderbolt-to-hdmi-2-1-4k-120hz-rgb4-4-4-10b-hdr-with-apple-silicon-m1-m4-now-possible.2381664/