Slow external enclosure NVME

Hello All,

I have this problem. A WD1TB NVME drive and two external enclosures. BAd,

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slow transfer, every now and then "disk not ejected properly" message. Disk new, cases new. HArdware Test shows no errors. Another disk in an OWC enclosure works without problems. I tried with Monterey which is native and now with Ventura and same thing. Well I don't know what to do and I have run out of ideas. PRAM, SMC was reset. Very rarely the drive returns to normal speeds. On Blackmagic very slow testing .

Model Name: Mac Pro

Model Identifier: MacPro6.1

Processor Name: 10-Core Intel Xeon E5

Processor Speed: 3 GHz

Total Number of Cores: 10

Memory: 64 GB

Update (05/20/23)

Disk Utility is also very opry with this kit :(

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crwdns2934109:0crwdne2934109:0

crwdns2889612:0crwdne2889612:0 0
crwdns2934285:0crwdne2934285:0