Your 386 is actually pretty fast, Speedsys gets confused by the presence of a co processor on a 386 and as as result gives a score approximately half what it should be.

it looks pretty ok to me.
Phil has 4 times more Cache then your mainboard.

Does your ET4000 has a DIP Switch ? maybe you must set Monitor Type ?
Did you look on the Display Type Jumper on your Mainboard ? did you set it to MONO or Color ?

On the mobo there is a jumper where there's written "MONO" and "CGA". It was on mono so I changed it to CGA, but it doesn't seem to change anything. The bios is set to "VGA/EGA/PGA".

That ET4000 doesn't have any dip switches, just 2 or 3 jumpers.

I'm going to check if disabling the FPU speeds things up or not

So I disabled the FPU and indeed, score increased vastly. Now I reach 9.25.

However, RAM speed is still rather low, but that's probably due to the bios not letting me change much 😒

Then your Card fails to detect the VGA Display,
You use a TFT right ?

Modern Displays have EDID on the the same Pins the ET4000 uses to determine B&W or Color Display.

These are:

111 - Monitor ID Bit 0
212 - monitor id 1 in or data from display
315 - monitor id 3 in or data clock

You can try a cable where these pins are not connected.
or maybe isolate them on the VGA Connector.

I overrode the ID pins on my ET4000 card so that it would always see a color monitor.
The memory performance does seem slow, but only way to improve that is if the BIOS allows to adjust memory timings...

That's a 1997 CRT, although I had other cards behaving oddly (sometimes the video card turns to b&w mode after a reset for no reason) and I only used that CRT with them so that's highly possible.

As for the ram speed, I guess the best I could do would be to change the bios to something more permissive.

A 1997 can also have EDID 😀