Time spent in org.mvel2.integration.impl.ClassImportResolverFactory constructor causing transaction timeouts

We have hit a critical bottleneck in our application as a result of attempting to execute rules on more facts then we have in the past.

I didn't think it was Drools at first but after profiling it is pretty evident that it is.

The callgraph is showing 560s in org.mvel2.integration.impl.ClassImportResolverFactory constructor and 152530 calls.
This also translates into org.mvel2.integration.impl.SimpleValueResolver constructor 18,454,778 calls for my present case.
This is being invoked from the following in CompiledExpression:

public Object getValue(Object staticContext, VariableResolverFactory factory) {
if (!optimized) setupOptimizers();
if (importInjectionRequired)

{ return execute(false, this, staticContext, new ClassImportResolverFactory(parserContext.getParserConfiguration(), factory)); }

Where importInjectionRequired is almost always going to be true because of:

public void setParserContext(ParserContext parserContext) {
if ((this.parserContext = parserContext) != null)

{ this.importInjectionRequired = parserContext.getImports() != null && parserContext.getImports().size() != 0; }

}

The parsercontext.imports seems to be always greater then 0 and to make matters worse I'm seeing a new Factory not only being created per rule but for the same rule multiple times.