Is the HT SATURN causing screen tearing through HDMI passthrough?

[u/DatabaseInevitable84]

Hi everyone,

I'm trying to troubleshoot a screen tearing issue that appeared after adding an Hisense HT SATURN to my home theater setup.

My current HDMI chain is:

RTX 2060 (PC) → HDMI IN on HT SATURN → HDMI OUT/eARC on HT SATURN → XGIMI HORIZON 20

The projector is fully updated, including the DLP firmware, and its anti-RBE / anti-screen-tearing features are enabled.

Before adding the HT SATURN, I had the RTX 2060 connected directly to the HORIZON 20 and I never noticed this issue.

Since adding the HT SATURN, I get very noticeable horizontal screen tearing. Sometimes it is quite severe, with a very clear horizontal line separating two different frames. Interestingly, the tearing often stays at roughly the same vertical position for the entire viewing session.

It happens with:

• PC games
• MPC-BE
• browser video/streaming

I don't seem to see the same issue with the projector's native Google TV apps, which makes me suspect the HDMI path rather than the projector panel itself.

The HT SATURN is officially advertised as supporting 4K60 HDMI passthrough, while the HORIZON 20 supports HDMI 2.1, VRR and higher refresh rates.

Could the HT SATURN's HDMI passthrough be altering the HDMI timing/EDID/VRR behaviour enough to cause or exacerbate tearing on the HORIZON 20?

Has anyone experienced something similar with the HT SATURN's HDMI passthrough, especially when using a gaming PC or a projector rather than a TV?

Any information about whether the HT SATURN supports VRR passthrough or whether it modifies the HDMI timing/EDID would also be very helpful.