Switching from ahamo to LINEMO worth it? A3292 iPhone 16 Pro

Good day r/japanlife!

Currently living in Tokyo with a Canadian iPhone 16 Pro (A3292) on the ahamo (NTT Docomo) network. This model # is also the same one sold for the Japanese market, here is the frequency check page. It shows compatibility with all LTE bands from NTT Docomo & Softbank, but sits at 66% (2/3) for 5G NTT Docomo and 75% (3/4) for 5G Softbank.

For some reason, I seem to have terrible service in crowded areas (Shinjuku/Shibuya Station, Tokyo Garden Theatre, Budokan, etc.) while everyone else's devices seem fine. In the train, Reddit is buffering on full bar 4G LTE/2 bar 5G while the person next to me is watching live soccer. Not currently running dual SIM, just the one local ESIM.

Thinking of switching from my current 2,970JPY 30GB ahamo plan to the 2,970JPY 30GB LINEMO Best Plan V, which should use the Softbank 5G bands and have better compatibility (basing off the frequency check page).

I've read varying reports on this sub on coverage in crowded places. Since this model is the same as the domestic 16 Pro, are users on ahamo/NTT Docomo having the same experience? At this point, would it be beneficial to switch or will I have the same problem with LINEMO/Softbank?

Thanks for your input!