Nesn pixelation only during games

Hi there:

I have been noticing random (annoying) pixelation on NESN and a few other (sports) channels, at night during games on all 4 of our X1 boxes & HDTVs - getting more frequent as the games go on.  I have checked all coaxial connections, reset all x1 boxes, reset cable modem (Netgear CM 2050V) reset WiFi mesh router & extenders (Eero 6 averages 947 Mbps down, 383 up, software version current), average extender 345 down 311 up).

many years ago (maybe 10) had similar issue & Comcast put a commscope CSMAPDU9VP  8 cable and 1 MOCA 2.0 output amplifier. We have no in line splitters.  One thought I had was commscope distribution amp degrading,  in attic due to heat, but last night it was cool up there, or being 10 yrs old, maybe not having freq response Comcast digital tv needing. Other thought since random, but only at night, only when likely lots of customers watching same channels, that Comcast street signal not keeping up with demand or keeping up but street amplifier old/degrading or street connections rusting (that's what it was 10 years ago).  

Hesitant to call as never had good luck with customer service who only know to go thru script and have me reset boxes, modem, WiFi, etc which takes huge amount of TIME as well as dexterity. I've been diagnosed with cancer, have limited mobility now (can't get up to attic) and when it gets bad, switch tv over to Xfinity stream & watch games with no pixelation.  Leaving this post in case it's not just me it's happening to, and I can shame Comcast into sending a truck to check its street amp & connections and then, if everything outside is fine, opening a call to go up to attic and check/replace distribution amp so I can spend my remaining days happy and not annoyed.