In my setup I used ig-platform-id 0x19120000 and Inject Intel true, however you might try different values. The most important config part is below.
Add to clover config:
<key>Devices</key>
<dict>
<key>AddProperties</key>
<array>
<dict>
<key>Device</key>
<string>IntelGFX</string>
<key>Key</key>
<string>AAPL,GfxYTile</string>
<key>Value</key>
<data>
AQAAAA==
</data>...
Skylake Intel HD 530 Graphics Glitch Fix
Add to clover config:
Code (Text):
<key>Devices</key>
<dict>
<key>AddProperties</key>
<array>
<dict>
<key>Device</key>
<string>IntelGFX</string>
<key>Key</key>
<string>AAPL,GfxYTile</string>
<key>Value</key>
<data>
AQAAAA==
</data>...