The metrics show no indication of any widespread tuning issues.
The only recent tuning issues were on the NVIDIA SHIELD after the kernel update and that only affected some Hauppauge tuners which has now been mostly resolved.
There is currently a 1.15.x pixilation issue / glitches which appears to be from Hauppauge users that is currently under investigation - but that is not a tuning issue.
If there are issues, they need to be investigated - initially through debug logs and after that may need curl channel capture
