Подскажите, как можно ускорить выполнение кода - VBA

For a = -2.1 To 2.1 Step 0.35
         For b = -2.1 To 2.1 Step 0.35
             For c = -2.1 To 2.1 Step 0.35
                 For d = -2.1 To 2.1 Step 0.35
                     For e = -2.1 To 2.1 Step 0.35
                         Var = Var + 1
                         For LOOP_CASE = 1 To 177
 
             Matrix(LOOP_CASE, 1+Var*5-5) = Round(3*(ADS.Value(LOOP_CASE, 73)+c)+2*(ADS.Value(LOOP_CASE, 72)+b)-(ADS.Value(LOOP_CASE, 74)+d)-3*(ADS.Value(LOOP_CASE, 71)+a)-3*(ADS.Value(LOOP_CASE, 75)+e),0)
             Matrix(LOOP_CASE, 2+Var*5-5) = Round(2*(ADS.Value(LOOP_CASE, 71)+a) + 0.2*(ADS.Value(LOOP_CASE, 74)+d) - (ADS.Value(LOOP_CASE, 72)+b) - (ADS.Value(LOOP_CASE, 73)+c) - (ADS.Value(LOOP_CASE, 75)+e),0)
             Matrix(LOOP_CASE, 3+Var*5-5) = Round(2*(ADS.Value(LOOP_CASE, 75)+e) + 2*(ADS.Value(LOOP_CASE, 71)+a) + (ADS.Value(LOOP_CASE, 74)+d) - 0.1*(ADS.Value(LOOP_CASE, 72)+b) - 2*(ADS.Value(LOOP_CASE, 73)+c),0)
             Matrix(LOOP_CASE, 4+Var*5-5) = Round((ADS.Value(LOOP_CASE, 73)+c) + (ADS.Value(LOOP_CASE, 75)+e) + 0.1*(ADS.Value(LOOP_CASE, 72)+b) - 0.5*(ADS.Value(LOOP_CASE, 74)+d) - (ADS.Value(LOOP_CASE, 71)+a),0)
             Matrix(LOOP_CASE, 5+Var*5-5) = Round(3*(ADS.Value(LOOP_CASE, 73)+c) + 1.2*(ADS.Value(LOOP_CASE, 74)+d) - 0.2*(ADS.Value(LOOP_CASE, 72)+b) - 2*(ADS.Value(LOOP_CASE, 71)+a) - 3*(ADS.Value(LOOP_CASE, 75)+e),0)
 
                         Next LOOP_CASE
                     Next e
                 Next d
             Next c
         Next b
     Next a
 
'--------------------Frequency analysis and putting results into the spreadsheet------------------
  
    For b = -25 To 60
        v = v+1
         For LOOP_CASE = 1 To 177
             For LOOP_VAR = 1 To 13^5*5
                 If Matrix (LOOP_CASE, LOOP_VAR) = b Then k=k+1
             Next LOOP_VAR
             Spreadsheet.Value (LOOP_CASE, v) = k
            k=0
         Next LOOP_CASE
     Next b
    v=0