Always been an issue but seems worse with every update. I say an issue, it does always work, but opening a large folder of files can take literally 5-10 seconds.
Vero4k is connected on a 5g connection to a ubiquiti AP, connecting at 200Mbps +, ~ -45dBm. The wired vero4k i have is completely different and near instant, and conversely seems to get faster with every update. Network share is just off a win 10 box using SMB.