After a few days of painstakingly solo troubleshooting, I turn to you guys if someone knows a solution. I have gathered all the data and I will list it bellow.
System:
Motherboard: Gigabyte B450 AORUS PRO
BIOS: F66g (latest updated)
CPU: AMD Ryzen 8 3700x
GPU: 2070 Super
RAM: 16 GB
Window 11 PRO (not upgraded, fresh installed from zero, with formatted drive)
OLD SATA: Samsung SSD 860 EVO 500GB
OLD HDD: ST2000DM008-2FR102
I decided to add for the first time a SSD M2: Samsung SSD 990 PRO 2T. (it has a cooler applied)
First Issue: I know it will have a speed bottleneck due to PCIe Gen 3 of the motherboard. But I would expect a bottleneck of ~3000 read / write speed, CrystalDiskMark showed 1300 read and 800 write.
The hindering issue: As the game install proceeds, the writing speed of the SSD will have multiple sudden drops as time passes.
Test done with a 75 GB game installed with the HoYoPlay Launcher (the same behavior occurred on other games / launchers)
h22:21 - Start installation
First 3 min: Write Speed 100 - 200 MB/s
h22:24 - After three minutes the usage reaches a constant 100% from now on
-7 min : Write Speed 50 - 80 MB/s
h22:31 - Average response time starts to spike (2000 - 8000)
-24 min : Write Speed ~10 MB/s
h22:56 - 84% Installed, still needs 1 hour
-46 min : Write Speed ~2 MB/s
h23:42 - 93% Installed still needs 30 min
-35 min: Write Speed ~2 MB/s
h24:17 - Finishes the install and starts a 1h of Verifying and repairing
- 70 min:: Read Speed ~18 MB/s and a few spikes of 40-100 KB/s of Write Speed
h25:27 - The installation ended with a Download failed status after 3 hours
Already attempted fixes and other clues:
- SSD installed in first slot PCIe Gen 3 x4
- Fresh installed Windows 11 PRO, no cache
- BIOS update to latest
- Defragment disk
- Disk health 100%
- Checked for viruses (non)
- Checked for latest drives (just installed)
- Checked for errors on disk (non)
- Checked the temperature of the SSD (~40C)
- No other component has a "crispy problem", all have good temperature values
- Issue occurs at first use of the SSD, at the first install on the SSD (no problem of being to full)
- Tried a different SSD and the same issue occurred: Kingston NV2 2T
- The same issue occurred on other games installed through diverse launchers
- The issue will not occur on the Samsung SSD 860 EVO 500GB
System:
Motherboard: Gigabyte B450 AORUS PRO
BIOS: F66g (latest updated)
CPU: AMD Ryzen 8 3700x
GPU: 2070 Super
RAM: 16 GB
Window 11 PRO (not upgraded, fresh installed from zero, with formatted drive)
OLD SATA: Samsung SSD 860 EVO 500GB
OLD HDD: ST2000DM008-2FR102
I decided to add for the first time a SSD M2: Samsung SSD 990 PRO 2T. (it has a cooler applied)
First Issue: I know it will have a speed bottleneck due to PCIe Gen 3 of the motherboard. But I would expect a bottleneck of ~3000 read / write speed, CrystalDiskMark showed 1300 read and 800 write.
The hindering issue: As the game install proceeds, the writing speed of the SSD will have multiple sudden drops as time passes.
Test done with a 75 GB game installed with the HoYoPlay Launcher (the same behavior occurred on other games / launchers)
h22:21 - Start installation
First 3 min: Write Speed 100 - 200 MB/s
h22:24 - After three minutes the usage reaches a constant 100% from now on
-7 min : Write Speed 50 - 80 MB/s
h22:31 - Average response time starts to spike (2000 - 8000)
-24 min : Write Speed ~10 MB/s
h22:56 - 84% Installed, still needs 1 hour
-46 min : Write Speed ~2 MB/s
h23:42 - 93% Installed still needs 30 min
-35 min: Write Speed ~2 MB/s
h24:17 - Finishes the install and starts a 1h of Verifying and repairing
- 70 min:: Read Speed ~18 MB/s and a few spikes of 40-100 KB/s of Write Speed
h25:27 - The installation ended with a Download failed status after 3 hours

Already attempted fixes and other clues:
- SSD installed in first slot PCIe Gen 3 x4
- Fresh installed Windows 11 PRO, no cache
- BIOS update to latest
- Defragment disk
- Disk health 100%
- Checked for viruses (non)
- Checked for latest drives (just installed)
- Checked for errors on disk (non)
- Checked the temperature of the SSD (~40C)
- No other component has a "crispy problem", all have good temperature values
- Issue occurs at first use of the SSD, at the first install on the SSD (no problem of being to full)
- Tried a different SSD and the same issue occurred: Kingston NV2 2T
- The same issue occurred on other games installed through diverse launchers
- The issue will not occur on the Samsung SSD 860 EVO 500GB
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