Build Your Own Arcade Controls Forum
Software Support => GroovyMAME => Topic started by: silmalik on August 23, 2017, 06:53:37 pm
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Hello,
I've recently decided to upgrade my system video card from HD4550 to R5 230 (Crimson 16.2.1 non-GCN / Windows 7 x64).
CRT Emu driver/VMMaker installation process with all resolutions is ok but it seems that a filter is now applied on all interlaced resolution.
The image is blurred, with a great loss of precision.
The card is flashed with ATOM and "native" 640x480 15kHz mode with default VGA driver is ok, but once CRT Emu/AMD driver starts, the image turns blurred.
No such behaviour with the old 4550.
I tried after a complete system re-installation and on another Windows 10 system with a HD7850 (GCN drivers) and I had... the same blurred result :cry:
Is this an expected behaviour? Is there a known possibility to get rid of this horrible effect ? ???
Thanks for reading and for any response.
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Yep. Expected behaviour: modern cards apply an anti-flicker filter by default.
Some people see it as a positive but, personally, I despise it. I went back to trusty ol' XFX 4350s.
Sent from my SM-A300Y using Tapatalk
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Thank for your answer.
HD4xxx have issues with interlaced mode too, related to synchronization.
So, is there a perfect solution?
Do we know if the HD4xxx interlaced sync issue is related to hardware or drivers?
If HD4xxxx sync problem has hardware source, a potential solution could HD5450 with CRT Emudrivers based on Catalyst 12.1.
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http://forum.arcadecontrols.com/index.php?topic=154223.msg1617096.msg#1617096
Sent from my SM-A300Y using Tapatalk
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Thank you, I've already fixed polarity as described in the topic.
My issue with HD4550 is a bit different.
For example, running mednafen in 480i is mostly ok, but I encounter slowdowns at some times during seconds. Only in fullscreen, never in windowed mode.
R5 230 is 100% ok on this aspect.