According to the schematics, the board uses GD32VF103C8T6 variant of GD32V.
Public specs of the C8 say that is has 64K of flash memory.
Close competitor of the T-Display - Sipeed Longan Nano RISC-V is using GD32VF103CBT6 with 128K of flash memory.
64K flash was Ok 5-6 years ago but it does not seem to be sufficient for most applications these days...
Have you thought about to switch onto CB in production T-Display GD32V boards ?
According to the schematics, the board uses GD32VF103C8T6 variant of GD32V. Public specs of the C8 say that is has 64K of flash memory.
Close competitor of the T-Display - Sipeed Longan Nano RISC-V is using GD32VF103CBT6 with 128K of flash memory.
64K flash was Ok 5-6 years ago but it does not seem to be sufficient for most applications these days... Have you thought about to switch onto CB in production T-Display GD32V boards ?