On master snapshot (on kernel 5.15.38) without without a patches there was a transfer of about 18-20Mbps in 10 meters in a rather crowded environment (two floors, two ceilings, partition wall ...), ping about 30 +/- 5ms. For comparison, I have about 35Mbps on the cable, and with the device itself, the wifi is not much better than at 10 meters in the smartphone. After applying the fix, the speed is similar (maybe a bit higher because sometimes it reaches 24Mbps) but the ping is about 5ms better on average. Except that I applied yet another fix- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-5.15.y&id=4bcc2ab96fce497ab9c7863dd051bdcf0a5018bf. It seems better than before the corrections, but it takes time for it, and on the LTE connection it is reading tea leaves 
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Firmware ath10k ver 10.4-3.6-00140 and kmod-10k-ct. Tests in 2.4GHz freq. Linksys EA6350v3 (ipq4019).