Changing IRAM/DRAM allocations under Arduino installation?

[Glen104TMR]

I'm trying to compile an Arduino sketch for ESP32 WROVER 16MB, but am hitting IRAM over run: "IRAM0 segment data does not fit", and "`iram0_0_seg' overflowed by 340 bytes".
Reading around seems to indicate that if using the ESP-IDF, then there's an ESP32.ld file that can be accessed and modified to change the IRAM/DRAM allocations for the ESP32.
However, I am using Arduino IDE (2.3.3), and I cannot find such a file under the Arduino installation.
Is there any way of adjusting the ESP32 IRAM/DRAM allocations for the Arduino environment?
Any help appreciated.