Fedora 33 latency

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Good Day All,

After performing a few clean install I continue to experience poor read
. Initially I installed with BTRFS with RAID1 and after a few minutes I
started experiencing delays when I use any application and try to open
an existing file. For example, if I am using gedit and select File >
Open I will have to wait approximately 45 to 90 seconds before Nautilus
launch so that I can select the file. The same goes for any application
. I thought that it was because of BTRFS COW but that theory was out of
the window after I replaced BTRFS with XFS, the only noticeable
difference is with XFS it takes a few hours before I experience the
same behaviour with slightly shorter delays for Nautilus opens.

My configuration
2 x Samsung SSD 850 with RAID1 (/boot and /boot/efi is not part of the
RAID)
LVM
1 x LVM volume group
8 x logical volumes
32GB RAM
4GB ZRAM

I mostly use the laptop for building/testing vms and containers
therefore, I have high I/O requirements.

I believe that I may need to increase my zram size which use to be
fully utilise when I was using BTRFS but with XFS it never passed 1GB.
Do I need to resort to the traditional SWAP or will increasing the ZRAM
pool?

Thanks in advance for your advice.

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