TRTEXEC out of memory error - Xavier NX

Please help, converting 200MB ResNet50-FPN on Jetson Xavier fails with this error.

[TRT] Internal error: plugin node (Unnamed Layer* 341) [PluginV2Ext]requires 383404800 bytes of scratch space, but only 16777216 is available. Try increasing the workspace size with IBuilderConfig::setMaxWorkspaceSize() if using IBuilder::buildEngineWithConfig, or IBuilder::setMaxWorkspaceSize() if using IBuilder::buildCudaEngine.

You’ll want to move this to the Xavier NX forum:
https://forums.developer.nvidia.com/c/agx-autonomous-machines/jetson-embedded-systems/jetson-xavier-nx/258