Intel HD530 Skylake 6600 High Sierra 10.13 glitches and 5mb available only

[AndrewBaggins]

I stuck on strange problem...
I cannot force my graphic to work normal. Everything works OK, but I have video-related problems: folders in Launchpad lag as hell, video in browser don't work and sometimes I have random glitches and artefacts.
Did anyone ever faced something like this??? I have no idea, what can it be. Nothing in Internet, nothing on forums, nothing in UTube. I really stuck.

My configuration:
Intel Core i5-6600 (I use integrated graphic - HD-530 series)
Motherboard ASrock Z170 Gaming
and old Benq-monitor 1280x1024

For some reason in system information I have only 5mb of graphic memory enabled.
Absolutely DON'T understand, what does it mean and how to fix it...

Pls, somebody, help...

 

[P1LGRIM]

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