What filesystem use for single data SSD (2TB) in a home server? XFS, or EXT4? F2FS?

Personally I like XFS for data drives as a lot of my files are large video files, and XFS tends to perform better with larger files, however it has the drawback of not being able to undelete files. That said Ext4 is also quite good and does support undelete. For the OS dive, Ext4 is a good choice.

Is one format faster than the other? I have 80% loaded 1TB hdd one ext4, and another NTFS but when i play files on my smart tv (smb share) it takes sooo long to read and acces complex archive. Could XFS be better at this?

XFS may be better since it is optimized for larger files, but Ext4 is not bad either. In either case if you go down that road a test could be warrented. NTFS (native for windows) is not a good choice for a filesystem on Linux, as it doesn't support linux permissions and will likely be slower since it isn't native.

Between the XFS and ext4 options, both are robust and well established on linux.

Before you go switching file systems though, lets talk about your connection speeds.

How are you accessing the shares from the TV? Is it wired or wifi?

If it's wifi, that brings a whole new set of problems into the mix, such as slower speeds to begin with, signal strength, radio frequeny interference from other wifi devices in your area and the related channel cross-talk of the carrier frequencies, and also the fact that only one device can transmit or receive over wifi at a time on a given network, so the more devices on the network the slower every wifi device gets.

Yes i tested wifi at first but when i got transfers around 20-25MB/s i figured out that my router suports only 802.11ac wifi. After this iscovery I switched to wire, where transfers peeked to around 100-120MB/s, which was very ok for me.

I tested different hdd- ext 4 with same data and still, at my tv some files need longer time to load, then some of them were partially loaded, or connection was lost. TV is sony x85j, android tv.

Due to this problems i wonder to buy dedicated nas server like synology or qnap, instead of omv, even if community support over here is very good, but there still are problems here and there.

I have two 1 TB nvme`s and I prefer ext4 for them, really fast and simple. Also can be mounted in systemrescue system or in other system.