Elaboration of entities that are generated take very long time

This is the part that generates all the entities, ADDR_ARRAY and ACT_READ_ACCESS_IND_ARRAY are both arrays that define the configuration of the entities. ASYNC_IN_PORT_MAPPING and ASYNC_OUT_PORT_MAPPING are Arrays containing the signals that can be read or written by accessing the respective adresses. The whole thing basically defines a adressable registerbank. I know it could be done with a Dualport RAM, but for now we have this solution and need to speed the build process up.

  ASYNC_GEN:
  for i in 0 to (NBR_ASYNC_PORTS-1) generate
    async : entity work.IF_ASYNC_PORT_V2 
      generic map(
        ADDR => ADDR_ARRAY(i),
        ACT_READ_ACCESS_IND => ACT_READ_ACCESS_IND_ARRAY(i))
      port map(
        nRESET                => nRESET, 
        CLK                   => CLK, 
        CTRL                  => s_ctrl_clk, 
        DATA_IN               => s_em1d_in_clk,
        DATA_OUT              => EM1D, 
        nOE                   => nEM1OE,
        DATA_FPGA_TO_DSP      => ASYNC_IN_PORT_MAPPING(i), 
        DATA_DSP_TO_FPGA      => ASYNC_OUT_PORT_MAPPING(i),
        READ_ACCESS_INDICATOR => ASYNC_OUT_READ_ACC_INDICATOR(i)
        );
  end generate ASYNC_GEN;