I have an RPi 4 4GB and I'm running RPi 64bit OS from a NVME HD connected via USB.

When remoted in via VNC, everything is very slow. It takes about 10s to open the browser.
I remote in using the local home network and the RPi is connected via WiFi.

From my on-line research, everybody always points the finger to the SD card, hence I'm trying an NVME drive.

These are my results from the `hdparm` utility:

```
pi@raspberrypi:~ $ sudo hdparm -Tt /dev/sda

/dev/sda:
 Timing cached reads:   1920 MB in  2.00 seconds = 960.75 MB/sec
 Timing buffered disk reads: read(2097152) returned 524288 bytes

```

I also checked that the RPi is not being throttled:

```
pi@raspberrypi:~ $ vcgencmd get_throttled
throttled=0x0

```

What else can I try to improve the VNC performances?