K.Retard Across 4 Cylinders (Datalogs Attached)

[Walahmelons]

I'm having an issue where I'm seeing knock retarding happening across all 4 cylinders at the same time. The car seems to drive fine & I can't notice any performance decrease, but the timing being pulled just recently started happening. Maybe winter gas is the issue? I'm not sure. I was hoping someone could take a look at these logs and tell me if I might have some issue. I've looked at the logs and I can't find anything blatantly obvious, but I also don't exactly know what I'm looking for. (Both logs were done on 93 octane. No additional added ethanol)

Mod list:
PRL HVI (Race MAF)
RV6 exhaust + Front Pipe
HKS Legamax Catback
Greddy Intercooler + Charge Pipes
Hondata Fuel System (Stock LPFP)
Sirimoto Flex Fuel Kit

[Walahmelons]

Here are screenshots from the datalogs

[Rares]

It looks more like a burst knock, I don't think there is any real knock there but I'm waiting for another opinion.

I'm curious to see "Knock retard step" table from your calibration and another log with a 3500-6500 rpm pull.

[Walahmelons]

I haven't seen it do this across other datalogs I have taken, granted I only take them every so often. Other Datalogs I can floor it and there will be zero knock retard. On one of the logs I attached (I can't remember which) the knock comes back immediately upon getting back on throttle at WOT.

My tune is an OTS tune & not one that I made myself. The person who makes it has the tune locked so others can't copying it and sell his work. So unfortunately I can't go in and show the tables you were asking about.